package com.zmn.plat.utils.bean;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

/**
* 描述：获取bean
* @author tanbiao
* @since 2020/11/12 10:15
* @return 
* @modifier      
*/
@Component
public class SpringBeanUtils implements ApplicationContextAware {
    private static Logger logger = LoggerFactory.getLogger(SpringBeanUtils.class);

    private static ApplicationContext applicationContext;

    //获取applicationContext
    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        if (SpringBeanUtils.applicationContext == null) {
            SpringBeanUtils.applicationContext = applicationContext;
        }

        logger.info("======== SpringBeanUtils 初始化成功! ========");
        System.out.println("======== SpringBeanUtils 初始化成功 ========");
    }

    //通过name获取 Bean.
    public static Object getBean(String name) {
        return getApplicationContext().getBean(name);
    }

    //通过class获取Bean.
    public static <T> T getBean(Class<T> clazz) {
        return getApplicationContext().getBean(clazz);
    }

    //通过name,以及Clazz返回指定的Bean
    public static <T> T getBean(String name, Class<T> clazz) {
        return getApplicationContext().getBean(name, clazz);
    }
}
